Changing back ground colour

Is there a way of changing the back ground colour in RR so you can have a light back ground in the day and dark at night? a bit like map monkey has. I know you can have day skin and night skin but when it changes it kinda restarts everything. And I know of gamma control but that kinda of washes out the colours.

What i'm asking is, is there a way to change the background with out loading a new skin

The short answer is no.

The long answer is yes, there's workarounds. You can use the LOADIMG command to load a different background onto your skin. Or you can use Flash and change the background dynamically like the MC2.0 skin.